package io;

import java.io.*;

public class CopyDemo3 {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("image.png");
        FileOutputStream fos=new FileOutputStream("image_cp3.png");
        BufferedInputStream bis=new BufferedInputStream(fis);//高级流
        BufferedOutputStream bos=new BufferedOutputStream(fos);//高级流
        int d;
        long state=System.currentTimeMillis();
        while ((d=bis.read())!=-1){
            bos.write(d);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完毕,耗时"+(end-state)+"ms");
    }
}
